I can see that, just like CGL, wanting to keep the history alive and complete.
Like how they fixed 1st and 2nd Successor Wars, the Dark Ages and the future IlClan.
Because, not only does it allow players to use them in their campaigns, either era specific or other.
Heck, I can see models where the number just added better components like the Drost IIa/b.
Better engines, Armor and upgraded weapon components.
" We added heated toilet seats and Cyro-Gen cupholders to chill that subsy beverage choice of yours. Our Anti-Gravity Micro-Fiber carpet is stain resistance, soil resistance and comes in a rainbow of colours! "
Or something...
I'm looking at 1,2,3 and 7(7C) for know...
TT